osfmk/vm/cpm.h

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * @OSF_COPYRIGHT@
  27  *
  28  */
  29
  30 #ifndef _VM_CPM_H_
  31 #define _VM_CPM_H_
  32
  33 /*
  34  *      File:   vm/cpm.h
  35  *      Author: Alan Langerman
  36  *      Date:   April 1995 and January 1996
  37  *
  38  *      Contiguous physical memory allocator.
  39  */
  40
  41 #include <mach_kdb.h>
  42 #include <mach_counters.h>
  43
  44 /*
  45  *      Return a linked list of physically contiguous
  46  *      wired pages.  Caller is responsible for disposal
  47  *      via cpm_release.
  48  *
  49  *      These pages are all in "gobbled" state when .
  50  */
  51 extern kern_return_t
  52         cpm_allocate(vm_size_t size, vm_page_t *list, boolean_t wire);
  53
  54 /*
  55  *      CPM-specific event counters.
  56  */
  57 #define VM_CPM_COUNTERS         (MACH_KDB && MACH_COUNTERS && VM_CPM)
  58 #if     VM_CPM_COUNTERS
  59 #define cpm_counter(foo)        foo
  60 #else   /* VM_CPM_COUNTERS */
  61 #define cpm_counter(foo)
  62 #endif  /* VM_CPM_COUNTERS */
  63
  64 #endif  /* _VM_CPM_H_ */